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Finding the Fourth Proportional to 159,757.10, 220,458.73 and 99,313.89

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Solution

The fourth proportional to 159,757.10, 220,458.73 and 99,313.89 is: 137,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,757.10 : 220,458.73 = 99,313.89 : x
  2. Step 2: Convert to fraction form
    159,757.10/220,458.73 = 99,313.89/x
  3. Step 3: Cross multiply
    159,757.10x = 220,458.73 × 99,313.89
  4. Step 4: Simplify right side
    159,757.10x = 21,894,614,060.76
  5. Step 5: Solve for x
    x = 21,894,614,060.76/159,757.10
  6. Step 6: Final answer
    x = 137,049.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.